Javier Escartín
@jescartin.bsky.social
CNRS Scientist @ Ecole Normale Supérieure de Paris (Dept. of Geosciences). Marine geologist.
Mapping the seafloor - including with robots (autonomous and remotely-operated). Interested in tectonics, volcanism, hydrothermal activity... mostly under water.
Mapping the seafloor - including with robots (autonomous and remotely-operated). Interested in tectonics, volcanism, hydrothermal activity... mostly under water.
Reposted by Javier Escartín
👩🎓 Ouverture des candidatures PSL #PhD tracks 2026-27 en Sciences de la terre et biodiversité. Ces cursus en 5 ans s'adressent à des étudiants à haut potentiel souhaitant relever les défis scientifiques de demain et préparer, dès le niveau Master, leur projet de recherche.
👉 psl.eu/phd-track-ea...
👉 psl.eu/phd-track-ea...
October 23, 2025 at 9:51 AM
👩🎓 Ouverture des candidatures PSL #PhD tracks 2026-27 en Sciences de la terre et biodiversité. Ces cursus en 5 ans s'adressent à des étudiants à haut potentiel souhaitant relever les défis scientifiques de demain et préparer, dès le niveau Master, leur projet de recherche.
👉 psl.eu/phd-track-ea...
👉 psl.eu/phd-track-ea...
Reposted by Javier Escartín
#Communiqué 🗞️ Une hausse de la température des fluides émis par les sources hydrothermales sous-marines signale l’inflation de la chambre magmatique sous le fond marin et peut annoncer une éruption. 🌋 🌊
👉 www.cnrs.fr/fr/presse/le...
👉 www.cnrs.fr/fr/presse/le...
October 14, 2025 at 3:25 PM
#Communiqué 🗞️ Une hausse de la température des fluides émis par les sources hydrothermales sous-marines signale l’inflation de la chambre magmatique sous le fond marin et peut annoncer une éruption. 🌋 🌊
👉 www.cnrs.fr/fr/presse/le...
👉 www.cnrs.fr/fr/presse/le...
The School de PIs #2 "ECOLπ2" now sails from St John's, arriving at Brest 21st Oct. Onboard l'Atalante F. Lallier (Sorbonne U., Station Biol. Roscoff) & M. Delescluse (ENS de Paris) together w/ 5 young scientists, C. Prigent, M. Bickert, J. Tugend, S. Sambolian & M. Ourgaud, under sunny skies now.
October 12, 2025 at 2:24 PM
The School de PIs #2 "ECOLπ2" now sails from St John's, arriving at Brest 21st Oct. Onboard l'Atalante F. Lallier (Sorbonne U., Station Biol. Roscoff) & M. Delescluse (ENS de Paris) together w/ 5 young scientists, C. Prigent, M. Bickert, J. Tugend, S. Sambolian & M. Ourgaud, under sunny skies now.
Reposted by Javier Escartín
#DeepSeaMining would cause severe impacts in all levels of large marine ecosystems - it`s devastating
Deep Sea Dialogue: Last month, diplomats, advocates, lawyers, and ambassadors from the @deepstewardship.bsky.social gathered in Kingston, Jamaica for the second part of the 30th session of the International Seabed Authority. Read more: www.bigelow.org/news/article... #bigelowlab #ocean #science
Scientists Continue to Advise Deep-Sea Mining Discussions - Bigelow Laboratory for Ocean Sciences
www.bigelow.org
August 27, 2025 at 11:22 AM
#DeepSeaMining would cause severe impacts in all levels of large marine ecosystems - it`s devastating
🧪⚒️ #NODSSUM cruise - On land, material & samples make their way back to home labs. And this morning we showed sonar images of barrels & photos taken by Ulyx flying at ~10 m above seafloor. Lots to do back in labs & offices. It was intense - good intense. Images: see copyright etc in thread
July 11, 2025 at 5:25 PM
🧪⚒️ #NODSSUM cruise - On land, material & samples make their way back to home labs. And this morning we showed sonar images of barrels & photos taken by Ulyx flying at ~10 m above seafloor. Lots to do back in labs & offices. It was intense - good intense. Images: see copyright etc in thread
🧪⚒️ #NODSSUM cruise - Operational update - North East Atlantic zones NEA#3 of radioactive waste dump. UlyX mapped w/sonar 140 km2 (15 dives ), detecting more than 3000 barrels - 26 sites cored for sediment, 19 rosettes for water samples, 8 fishtraps (1 @ bottom, 9 rattails), 1 current meter.
July 6, 2025 at 3:35 PM
🧪⚒️ #NODSSUM cruise - Operational update - North East Atlantic zones NEA#3 of radioactive waste dump. UlyX mapped w/sonar 140 km2 (15 dives ), detecting more than 3000 barrels - 26 sites cored for sediment, 19 rosettes for water samples, 8 fishtraps (1 @ bottom, 9 rattails), 1 current meter.
🧪⚒️ #NODSSUM cruise - Sunday w/ pains au chocolat - & 48 h till we leave the work site. Last night no UlyX dive due to weather & coring. The 12-tube Oktopus corer preserves the water - sediment interface, and a critical part to look for radionuclides from barrels or surface fall-out.
July 6, 2025 at 1:26 PM
🧪⚒️ #NODSSUM cruise - Sunday w/ pains au chocolat - & 48 h till we leave the work site. Last night no UlyX dive due to weather & coring. The 12-tube Oktopus corer preserves the water - sediment interface, and a critical part to look for radionuclides from barrels or surface fall-out.
🧪⚒️ #NODSSUM cruise - we are into the last week of the cruise. Up to now we have been spared of bad weather. We are now sandwiched in a narrow high pressure corridor w/ calm seas… ans spectacular sunsets & sunrises & moon rivers - but some rocking in the horizon this weekend.
July 4, 2025 at 6:08 AM
🧪⚒️ #NODSSUM cruise - we are into the last week of the cruise. Up to now we have been spared of bad weather. We are now sandwiched in a narrow high pressure corridor w/ calm seas… ans spectacular sunsets & sunrises & moon rivers - but some rocking in the horizon this weekend.
🧪⚒️ #NODSSUM cruise - Operational update - North East Atlantic zones NEA#3 and NEA#4 of radioactive dump. UlyX mapped w/sonar 110 km2 in 7 dives (1 to process ), detecting more than 1900 barrels, 9 sites cored 1 going (sediment), more than 10 rosettes (water samples), & 9 rattails w/fish traps
June 30, 2025 at 1:45 PM
🧪⚒️ #NODSSUM cruise - Operational update - North East Atlantic zones NEA#3 and NEA#4 of radioactive dump. UlyX mapped w/sonar 110 km2 in 7 dives (1 to process ), detecting more than 1900 barrels, 9 sites cored 1 going (sediment), more than 10 rosettes (water samples), & 9 rattails w/fish traps
🧪⚒️ #NODSSUM cruise - on board now the teams are well seasoned and coordinated - operations run smoothly and efficiently all along- with sunshine and calm seas - finally - for the next few days…
Update of cruise results/dives/samples to come shortly
www.linkedin.com/posts/caroli...
Update of cruise results/dives/samples to come shortly
www.linkedin.com/posts/caroli...
The #NODSSUM expedition is going well! | Caroline Gini
The #NODSSUM expedition is going well! ⛴️
Operations at sea are a complex ballet to ensure no time is wasted and all the scientific objectives are met by the end of the expedition 🔬📚⚒️
- First, ship...
www.linkedin.com
June 30, 2025 at 11:01 AM
🧪⚒️ #NODSSUM cruise - on board now the teams are well seasoned and coordinated - operations run smoothly and efficiently all along- with sunshine and calm seas - finally - for the next few days…
Update of cruise results/dives/samples to come shortly
www.linkedin.com/posts/caroli...
Update of cruise results/dives/samples to come shortly
www.linkedin.com/posts/caroli...
🧪⚒️ #NODSSUM cruise - WOW behind and WOW! Science day: Ulyx came back from a sonar survey at a site visited by AUV Epaulard in 1983 - >600 barrels more (>1800 to date) + a CTD/rosette during the dive, succesful sediment coring, and two fish traps recovered w/ 5 rattails (grenadiers).
June 28, 2025 at 4:09 PM
🧪⚒️ #NODSSUM cruise - WOW behind and WOW! Science day: Ulyx came back from a sonar survey at a site visited by AUV Epaulard in 1983 - >600 barrels more (>1800 to date) + a CTD/rosette during the dive, succesful sediment coring, and two fish traps recovered w/ 5 rattails (grenadiers).
🧪⚒️ #NODSSUM cruise - WOW - Wainting on Weather with a multibeam survey and no Ulyx dive yesterday- after 5 days of work at the radioactive waste dump site. After 5 Ulyx dives we now located >1200 barrels in sonar maps, and sediment/water/fish sampling is well on the way… more details later…
June 27, 2025 at 8:51 AM
🧪⚒️ #NODSSUM cruise - WOW - Wainting on Weather with a multibeam survey and no Ulyx dive yesterday- after 5 days of work at the radioactive waste dump site. After 5 Ulyx dives we now located >1200 barrels in sonar maps, and sediment/water/fish sampling is well on the way… more details later…
🧪⚒️ #NODSSUM cruise - we arrived to the radioactive waste dump site 2 days ago & AUV UlyX is brings up sonar data that will guide our sampling strategy. After checks for radioprotection, sonar data (500 Gb) transfer via the sturdiest hard drive ever - rated 6000m depth in a tinanium bottle.
June 22, 2025 at 7:26 AM
🧪⚒️ #NODSSUM cruise - we arrived to the radioactive waste dump site 2 days ago & AUV UlyX is brings up sonar data that will guide our sampling strategy. After checks for radioprotection, sonar data (500 Gb) transfer via the sturdiest hard drive ever - rated 6000m depth in a tinanium bottle.
🧪⚒️ #NODSSUM cruise - the first operations to test sampling of water and sediment, radioprotection protocoles, and the AUV w/ its new sonar are done. Soon off to a reference site w/ depths of more than 4800 m, before the work at the radioactive dump site.
June 17, 2025 at 1:38 PM
🧪⚒️ #NODSSUM cruise - the first operations to test sampling of water and sediment, radioprotection protocoles, and the AUV w/ its new sonar are done. Soon off to a reference site w/ depths of more than 4800 m, before the work at the radioactive dump site.
🧪⚒️ #NODSSUM cruise - L’Atalante is now on the way after leaving Brest. First AUV UlyX dive tuesday morning to test all the instruments - and water and sediment sampling to set in place procedures and train the teams.
June 16, 2025 at 10:59 AM
🧪⚒️ #NODSSUM cruise - L’Atalante is now on the way after leaving Brest. First AUV UlyX dive tuesday morning to test all the instruments - and water and sediment sampling to set in place procedures and train the teams.
🧪⚒️ #NODSSUM cruise - the yellow UlyX - the autonomous underwater vehicle or AUV - is onboard this sunny Saturday morning - ready for deep diving & mapping the abyssal plains of the Atlantic. Back deck of l’Atalante now fully occupied also with moorings, corers, rosettes, etc. Almost ready to go.
June 14, 2025 at 6:53 AM
🧪⚒️ #NODSSUM cruise - the yellow UlyX - the autonomous underwater vehicle or AUV - is onboard this sunny Saturday morning - ready for deep diving & mapping the abyssal plains of the Atlantic. Back deck of l’Atalante now fully occupied also with moorings, corers, rosettes, etc. Almost ready to go.
🧪⚒️ #NODSSUM cruise - L’Atalante @ Brest harbor @ our arrival &some night pics. Empty but loading has begun & will be filled today w/ containers, instruments, the Ulyx autonomous robot, computers… Boarding Sun to set up labs & work spaces. Thanks to all making this possible #DT_INSU #FOF #GENAVIR
June 13, 2025 at 9:19 AM
🧪⚒️ #NODSSUM cruise - We bring along Marina Zindy’s art works, to be placed on ballast for moorings to be deployed in coming weeks. Permanently installed at the seafloor, we may visit them in a year or two during a follow up cruise. Read about Marina's project here:
www.linkedin.com/posts/marina...
www.linkedin.com/posts/marina...
#unoc3 #nodssum #unoc3 #nodssum | Marina Zindy
🚨 This week, the third United Nations Ocean Conference #UNOC3 is taking place in Nice.
🌊 To mark the occasion, I'd like to share with you my deep-sea project carried out with ENS Paris ! Here'...
www.linkedin.com
June 10, 2025 at 7:28 PM
🧪⚒️ #NODSSUM cruise - We bring along Marina Zindy’s art works, to be placed on ballast for moorings to be deployed in coming weeks. Permanently installed at the seafloor, we may visit them in a year or two during a follow up cruise. Read about Marina's project here:
www.linkedin.com/posts/marina...
www.linkedin.com/posts/marina...
🧪⚒️ #NODSSUM cruise - Wind and waves are limiting factors for operations at sea - & thus to gather samples and data. While far ahead, but we begin to keep track of predictions in our working area (~46N 17W 😬) - working from the 20th of June, for about 20 days (check wave height at the flagpole).
June 7, 2025 at 8:01 AM
🧪⚒️ #NODSSUM cruise - Wind and waves are limiting factors for operations at sea - & thus to gather samples and data. While far ahead, but we begin to keep track of predictions in our working area (~46N 17W 😬) - working from the 20th of June, for about 20 days (check wave height at the flagpole).
🧪⚒️ #NODSSUM cruise - J-10 and cruise preparations move along. Quizz - what is this shipment just received at Clermont Ferrand? Some clues: Not depth-rated 6000 m, ~5.5 kg in air and <0.5 kg in water. Not critical for any specific scientific operation.
June 4, 2025 at 9:34 PM
🧪⚒️ #NODSSUM cruise - J-10 and cruise preparations move along. Quizz - what is this shipment just received at Clermont Ferrand? Some clues: Not depth-rated 6000 m, ~5.5 kg in air and <0.5 kg in water. Not critical for any specific scientific operation.
🧪⚒️ - PhD position APPLICATIONS OPEN TILL JULY 15th 2025 - based @ U. Lyon (M. Andreani) w/ the participation of ENS Paris - on fluid-rock interactions at ridges. This is part of the FLUXBEATS ITN project (www.fluxbeats.eu) involving 10 PhD programs.
observatoire.univ-lyon1.fr/actualites/j...
observatoire.univ-lyon1.fr/actualites/j...
www.fluxbeats.euinvolving
May 28, 2025 at 7:51 AM
🧪⚒️ - PhD position APPLICATIONS OPEN TILL JULY 15th 2025 - based @ U. Lyon (M. Andreani) w/ the participation of ENS Paris - on fluid-rock interactions at ridges. This is part of the FLUXBEATS ITN project (www.fluxbeats.eu) involving 10 PhD programs.
observatoire.univ-lyon1.fr/actualites/j...
observatoire.univ-lyon1.fr/actualites/j...
🧪⚒️ #NODSSUM cruise, J-27: Onboard N/O L'Atalante, AUV UlyX first science deployment @ NE Atlantic Abyssal Plain to depths of 5500 m, to identify and map radioactive waste barrels @ the seafloor & impacts on ecosystems. CNRS press release (cruise webpage in link)
www.cnrs.fr/fr/presse/de...
www.cnrs.fr/fr/presse/de...
Déchets radioactifs : une mission scientifique part cartographier les fûts immergés de l’Atlantique
Entre 1950 et 1990, plus de 200 000 fûts remplis de déchets radioactifs ont été jetés dans les abysses de l’océan Atlantique Nord-Est.La première mission de la campagne NODSSUM, prévue du 15 juin au 1...
www.cnrs.fr
May 21, 2025 at 5:11 PM
🧪⚒️ #NODSSUM cruise, J-27: Onboard N/O L'Atalante, AUV UlyX first science deployment @ NE Atlantic Abyssal Plain to depths of 5500 m, to identify and map radioactive waste barrels @ the seafloor & impacts on ecosystems. CNRS press release (cruise webpage in link)
www.cnrs.fr/fr/presse/de...
www.cnrs.fr/fr/presse/de...
🧪⚒️ how well do we know the ocean floor? We now have the morphology for ~30% of the seafloor mapped by ships (seabed2030.org). What about visual observations? Dives with rovs, submersibles, towed sand other systems, have inspected <0.001%, about 1500 km2. At best.
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
May 8, 2025 at 11:56 AM
🧪⚒️ how well do we know the ocean floor? We now have the morphology for ~30% of the seafloor mapped by ships (seabed2030.org). What about visual observations? Dives with rovs, submersibles, towed sand other systems, have inspected <0.001%, about 1500 km2. At best.
www.science.org/doi/10.1126/...
www.science.org/doi/10.1126/...
Reposted by Javier Escartín
Current legal frameworks can’t protect the oceans from deep-sea mining and the negative impacts on humankind
…then they need to be changed
theconversation.com/current-lega...
…then they need to be changed
theconversation.com/current-lega...
Current legal frameworks can’t protect the oceans from deep-sea mining and the negative impacts on humankind
Current regulations governing deep-sea mining are not enough to protect the ocean.
theconversation.com
May 3, 2025 at 10:45 AM
Current legal frameworks can’t protect the oceans from deep-sea mining and the negative impacts on humankind
…then they need to be changed
theconversation.com/current-lega...
…then they need to be changed
theconversation.com/current-lega...